CAJ | 학술논문

随着科技的发展，用电设备对电能质量的要求越来越高，电压暂降问题越来越受到重视，其中准确的电压暂降检测是治理电压暂降问题的前提。提出采用自适应陷波器结构的滤波功能，结合频率自适应方法，可以准确的检测出频率变化时的相电压的基波信号及其正交信号，从而可以求得电压的幅值和相位信息，达到电压暂降检测的目的。该方法结构简单，抑制谐波影响，适应频率变化，仿真和实验结果均表明，采用自适应陷波器的电压暂降检测方法，可以准确的获得每相电压的电压暂降信息。
수착과기적발전，용전설비대전능질량적요구월래월고，전압잠강문제월래월수도중시，기중준학적전압잠강검측시치리전압잠강문제적전제。제출채용자괄응함파기결구적려파공능，결합빈솔자괄응방법，가이준학적검측출빈솔변화시적상전압적기파신호급기정교신호，종이가이구득전압적폭치화상위신식，체도전압잠강검측적목적。해방법결구간단，억제해파영향，괄응빈솔변화，방진화실험결과균표명，채용자괄응함파기적전압잠강검측방법，가이준학적획득매상전압적전압잠강신식。
With the development of technology, the requirement of electrical equipment for power quality is getting higher.Voltage sag problem receives wider attention, where accurate detection of the voltage sag is the premise of voltage sag compensation.In this paper, the method of employing the filter function of adaptive notch filter structure and frequency adaptive method is proposed to accurately detect the fundamental phase voltage signal and the quadra -ture signal under frequency changes .Thus, the amplitude and phase information of the voltage can be obtained , and the voltage sag detection is achieved .The method is simple, eliminates harmonic influence, and adapts to frequency changes.Simulation and experimental results show that the proposed method can accurately obtain the voltage sag in -formation of each phase.